Rudolf Steiner: "Here on earth, man really evolves more and more in a definite direction. One might call it that of the so-called ‘concept of being.’ And to-day people are already greatly taken with this idea of ‘the concept of being.’ What do I really mean by this? Nowadays hardly anything is regarded as of value unless it is conceived as actually existing. When anyone comes who does not speak of something palpable, he is considered a dreamer. Men go about speaking of ‘reality,’ and compared to this, mere thought is nothing. Countless men do not value thought today because they cannot lay hold of it. ‘Existence’ means the forcible realzsation of that which is perceived; one has nothing to do with bringing about the existence of a thing, its existence is obvious. And anything which cannot in this way be proved to exist, is held by man in ever decreasing regard.